body{
    .px2rem(height,1400);
    background: darkgrey;
}
.px2rem(@name, @px) {
    @{name}: @px / 75 * 1rem;
}
.txh {
    display: flex;
    display: -webkit-flex;
}
.head{
    background: white;
    .txh();
    justify-content: space-between;
    align-items: center;
    width: 100%;
    border-bottom: 1px solid darkgray;
    .px2rem(height,92);
//  border: 1px solid darkblue;
    span:nth-child(1){
        img{
            .px2rem(width,45);
            .px2rem(height,45);
            .px2rem(padding-left,20);
        }
    }
    span:nth-child(2){
        .px2rem(font-size,33);
    }
    span:nth-child(3){
        img{
            .px2rem(width,45);
            .px2rem(height,45);
            .px2rem(padding-right,20);
            
            
        }
    }
}
.one_1{
    background: white;
    .txh();
//  border: 1px solid darkblue;
    dl{
        width: 100%;
       .px2rem(height,90);
        .txh();
        justify-content:center; 
        align-items: center;
        dt{
            img{
                .px2rem(width,50);
                .px2rem(height,50);
            }
        }
        dd{
            .px2rem(font-size,30);
        }
    }
}
.imgs{
   .txh();
    justify-content: center;
    align-items: center;
//  flex-wrap: wrap;
  .px2rem(height,900);
//height: 100%;
   img{
      
   }
    
}
